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Fabrication of Wave-Like Microstructure on the Bottom of Microflow Channel of Metallic Bipolar Plate

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Abstract:

Metallic bipolar plates with unique wave-like microstructure on the bottom of microflow channel have shown promising prospects for the application in proton exchange membrane microfuel cell. A novel method—milling with special thin slotting cutters is developed for fabrication of wave-like microstructure on the bottom of microflow channels. The special thin slotting cutter is manufactured by removing one or several teeth every one tooth of the traditional slotting cutter regularly. Forming mechanism of wave-like microstructure is presented and experimental tests have been conducted for validation of the feasibility of the novel method. Results show that the wave-like microstructure can be successfully fabricated on the bottom of microflow channel. The bottom of bipolar plates with wave-like microstructure is not a flat plane, but a wavy groove. The wavelength and amplitude of wave-like microstructure increase with the increase of feed speed and the number of removed teeth.

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Advances in Machining and Manufacturing Technology XII View Preview

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Periodical:

Key Engineering Materials (Volumes 589-590)

Pages:

547-551

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.589-590.547

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Online since:

October 2013

Authors:

Hong Liang Tang, Zhen Ping Wan, Yong Tang

Keywords:

Bipolar Plate, Milling, Slotting Cutter, Wave-Like Flow Channel

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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